package com.iluwatar.doubleadapter;

/**
 * Created by Administrator on 2015/10/27.
 */
public class Keyboard implements USB {

    @Override
    public String input(String content) {
        if ("".equals(content) || content == null)
            return "您什么也没有输入";
        return "您输入的文字是" + content;
    }
}
